Question How to insert multiple lines into richtextbox?

[WiiFan2012]

I'm working on a program that inputs a text box text into a RichTextBox via a button click. But when I click a button, it over writes the text that is already in the RichTextBox. How can I prevent this?

Thanks!

 

[JohnH]

There are several options, f.ex:

• AppendText method to append the text to the existing.
• SelectedText Property to replace the selected text (can also be just a cursor position!).
• Text Property to retrieve current, modify, and and assign the new text.
• Lines property to retrive current, modify, and assign the new lines array.

 

[WiiFan2012]

Give me the code.... AppendText doesn't work for me. where ever I put it, instance is underlined in green.